NEXTEK VALVE SPRINGS, RETAINERS, LOCATORS, AND LOCKS -
learn more about our valve spings,
retainers,
locators,
locks
Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Retainers are manufactured in our own double spindle CNC machines to exacting tolerances and precise installed height specifications. Locators are manufactured in our own CNC lathes. Heat treated and black oxided after machining. Valve locks are manufactured in our own Swiss turning centers with rigid control over the all-important angle to ensure precise mating with the retainer. |
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| NEXTEK VALVE SPRINGS |
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| Part No. |
Description |
Max
Valve Lift |
O.D. |
I.D. |
Installed/Open Pressure |
Rate
(lbs/in) |
Coil
Bind |
Steel
Retainer # |
Titanium
Retainer # |
 |
| Stock Diameter Single Conical Ovate Wire |
|
| 221428-16 |
SBC LS-Series,
LT-1/LT-4/L-98
High Performance Street/Strip |
.600" |
1.076" Top
1.311" Bottom |
.650" Top
.885" Bottom |
150 @ 1.800"
355 @ 1.200" |
341 |
1.085" |
23620-16 |
23622-16
23625-16 (+.050") |
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| SuperFinished Stock Diameter Single Conical Ovate Wire |
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| 221438-16 |
SBC LS Series,
LT-1/LT-4/L-98
High Performance Street/Strip |
.650" |
1.076" Top
1.311" Bottom |
.650" Top
.885" Bottom |
150 lbs. @ 1.800"
375 lbs. @ 1.150" |
353 |
1.100" |
23620-16 |
23622-16
23625-16 (+.050") |
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| Fully Polished Double Without Damper |
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| 221436-16 |
SBC LS-Series,
High Performance Street/Strip |
.660" |
1.295" |
.676" |
155 @ 1.810"
405 @ 1.150" |
379 |
1.100" |
23621-16 |
23617-16
23623-16 (+.050") |
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| 221435-16 |
SBC LS Series,
High Performance Street/Strip |
.700" |
1.340" |
.726" |
170 @ 1.810"
446 @ 1.110" |
394 |
1.050" |
23610-16 (+.050") |
23611-16 (+.050") |
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| 221421-16 |
SBC LS-Series,
High Performance Hydraulic Roller |
.800" |
1.324" |
.676" |
165 @ 1.800"
515 @ 1.000" |
435 |
.900" |
|
23618-16 (+050") |
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| Super Finished Double Without Damper |
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| 221422-16 |
SBC LS-Series,
High Performance Solid Roller |
.780" |
1.335" |
.622" |
270 @ 1.800"
870 @ 1.020" |
780 |
.960" |
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23619-16 (+.050") |
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LS / LT1 / LT4 VALVE SPRING KITS
- Kits are sold with genuine NexTek® valvesprings and Manley manufactured matching components
- Don't settle for "offshore made" retainers, locators and locks with sloppy tolerances yielding inconsistent installed heights
- See catalog for more NexTek® valvespring part numbers to accomodate higher lift cams
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| Part No. |
Application / Max. Lift |
NexTek®
Spring No. |
7° Steel
Retainer No. |
I.D. Valve Spring
Locator No. |
7° Machined
Valve Lock No. |
Viton Valve
Stem Seals No. |
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| 26382038KS |
SBC LS-Series, .600" Max. Lift |
221438-16 |
23620-16 |
42338-16 (.505" ID) |
13098-16 |
24042-16 |
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| 26362134KS |
SBC LS-Series, .660" Max. Lift |
221436-16 |
23621-16 |
42334-16 (.505" ID) |
13098-16 |
24042-16 |
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| 26351048KS |
LS / .700" |
221435-16 |
23610-16 |
42348-16 (.505" ID) |
13098-16 |
24042-16 |
| Part No. |
Application / Max. Lift |
NexTek®
Spring No. |
7° Steel
Retainer No. |
I.D. Valve Spring
Locator No. |
7° Machined
Valve Lock No. |
Viton Valve
Stem Seals No. |
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| 26382538KS |
SBC LS-Series, .650" Max. Lift |
221438-16 |
23625-16 |
42338-16 (.505" ID) |
13098-16 |
24042-16 |
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| 2638LT4KS |
LT4 / .650" |
221438-16 |
23601-16 |
42148-8 (Int.) / 42161-8 (Exh.) |
13098-16 |
24042-16 |
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| 26361734KLS |
LS / .560" - LT1 / .660" |
221436-16 |
23617-16 |
42334-16 (.505" ID) |
13094-16 |
24042-16 |
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| 26362324KS |
LS / .660" |
221436-16 |
23623-16 |
42124-16 (.570" ID) |
13098-16 |
24042-16 |
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| 26362334KS |
SBC LS-Series, .660" Max. Lift |
221436-16 |
23623-16 |
42334-16 (.505" ID) |
13098-16 |
24042-16 |
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| 2636LT4KS |
LT4 / .660" |
221436-16 |
23602-8 (Int.) / 23623-8 (Exh.) |
42162-8 (Int.) / 42165-8 (Exh.) |
13098-16 |
24042-16 |
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| 26351135KS |
LS / .700" |
221435-16 |
23611-16 |
42135-16 (.567" ID) |
13098--16 |
24042-16 |
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| 26351148KS |
LS / .700" |
221435-16 |
23611-16 |
42348-16 (.505" ID) |
13098--16 |
24042-16 |
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| 2635LT4KS |
LT4 / .700" |
221435-16 |
23603-16 |
42168-8 (int.) / 42169-8 (Exh.) |
13098-16 |
24042-16 |
| Part No. |
Application / Max. Lift |
NexTek®
Spring No. |
7° Steel
Retainer No. |
I.D. Valve Spring
Locator No. |
7° Machined
Valve Lock No. |
Viton Valve
Stem Seals No. |
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| 26380638KS |
SBC LS-Series, .600" Max. Lift |
221438-16 |
23606TS-16 |
42338-16 (.505" ID) |
13153-16 |
24042-16 |
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| 26361624KS |
LS / .660" |
221436-16 |
23616TS-16 |
42124-16 (.570" ID) |
13153-16 |
24042-16 |
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| 26361634KS |
SBC LS-Series, .660" Max. Lift |
221436-16 |
23616TS-16 |
42334-16 (.505" ID) |
13153-16 |
24042-16 |
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| 26353335KS |
LS / .700" |
221435-16 |
23633TS-16 |
42135-16 (.567" ID) |
13153-16 |
24042-16 |
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| 26353348KS |
LS / .700" |
221435-16 |
23633TS-16 |
42348-16 (.505" ID) |
13153-16 |
24042-16 |
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| Note: Max lift figures above may vary depending upon the cylinder head and installed height. |
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| TITANIUM & STEEL RETAINERS |
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|
Valve Stem
Diameter |
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Dimensions (Retainer Step Dimension Chart) |
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| Part # |
Quantity |
Spring |
Degree |
A |
B |
C |
Height |
Valve Locks |
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| Titanium |
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23622-16
23625-16 |
16 pcs. |
221428-16/221438-16 |
.3133"/.3136" |
7° |
.935" |
.640" |
.570" |
Stock
+.050" |
13098-16 |
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| 23617-16 |
16 pcs. |
221436-16 |
.3133"/.3136" |
7° |
1.155" |
.950" |
.675" |
Stock |
13098-16 |
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| 23623-16 |
16 pcs. |
221436-16 |
.3133"/.3136" |
7º |
1.155" |
.950" |
.675" |
+.050" |
13098-16 |
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| 23611-16 |
16 pcs. |
221435-16 |
.3133"/.3136" |
7º |
1.200" |
.985" |
.715" |
+.050" |
13098-16 |
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| 23618-16 |
16 pcs. |
221421-16 |
.3133"/.3136" |
7° |
1.200" |
.910" |
.666" |
+.050" |
13098-16 |
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| 23619-16 |
16 pcs. |
221422-16 |
.3133"/.3136" |
10° |
1.235" |
.900" |
.615" |
+.050" |
13153-16 |
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| 7° Steel |
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| 23620-16 |
16 pcs. |
221428-16/221438-16 |
.3133"/.3136" |
7º |
.935" |
.640" |
--- |
Stock |
13098-16 |
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| 23621-16 |
16 pcs. |
221436-16 |
.3133"/.3136" |
7° |
1.155" |
.950" |
.675" |
+.050" |
13098-16 |
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| 23610-16 |
16 pcs. |
221435-16 |
.3133"/.3136" |
7º |
1.200" |
.985" |
.715" |
+.050" |
13098-16 |
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| 10° H-13 Tool Steel |
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| 23606TS-16 |
16 pcs. |
221428-16/221438-16 |
.3133"/.3136" |
10° |
.935" |
.640" |
--- |
Stock |
13153-16 |
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| 23616TS-16 |
16 pcs. |
221436-16 |
.3133"/.3136" |
10° |
1.155" |
.950" |
.675" |
+.050" |
13153-16 |
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| 23615TS-16 |
16 pcs. |
221435-16 |
.3133"/.3136" |
10° |
1.190" |
.985" |
.715" |
Stock |
13153-16 |
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| 23633TS-16 |
16 pcs. |
221435-16 |
.3133"/.3136" |
10° |
1.190" |
.985" |
.715" |
+.050" |
13153-16 |
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| 23634TS-16 |
16 pcs. |
221421-16 |
.3133"/.3136" |
10° |
1.200" |
.910" |
.665" |
+.050" |
13153-16 |
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| I.D. VALVE SPRING LOCATORS |
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| Part No. |
Quantity |
Spring # |
Locator I.D. |
Locator O.D. |
Thickness |
Shoulder Diameter |
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| 42336-16 |
16 pcs. |
221428-16 / 221438-16 |
.505" |
1.290" |
.062" |
.875" |
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| 42338-16 |
16 pcs. |
221428-16 / 221438-16 |
.505" |
1.290" |
.035" |
.875" |
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| 42349-16 |
16 pcs. |
221428-16 / 221438-16 |
.570" |
1.290" |
.062" |
.875" |
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| 42334-16 |
16 pcs. |
221436-16 |
.505" |
1.270" |
.035" |
.675" |
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| 42138-16 |
16 pcs. |
221436-16 |
.505" |
1.270" |
.062" |
.675" |
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| 42124-16 |
16 pcs. |
221436-16 |
.570" |
1.270" |
.062" |
.675" |
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| 42348-16 |
16 pcs. |
221435-16 |
.505" |
1.320" |
.035" |
.715" |
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| 42135-16 |
16 pcs. |
221435-16 |
.567" |
1.320" |
.035" |
.715" |
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| 42117-16 |
16 pcs. |
221421-16 |
.505" |
1.300" |
.035" |
.665" |
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| 42130-16 |
16 pcs. |
221421-16 |
.567" |
1.300" |
.035" |
.665" |
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| 42129-16 |
16 pcs. |
221422-16 |
.505" |
1.310" |
.035" |
.615" |
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| 42131-16 |
16 pcs. |
221422-16 |
.567" |
1.310" |
.035" |
.615" |
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7° MACHINED VALVE LOCKS
- Highest quality steel alloy
- Heat treated and black oxide finished
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| Part No. |
Quantity |
Valve Stem |
Groove Type |
Wgt./Pr. |
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| 13094-16 |
16 pr. |
8mm (.3135") |
Single Radius Chevy LS, LT1 (.050" less) |
2.6 gms |
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| 13098-16 |
16 pr. |
8mm (.3135") |
Single Radius Chevy LS, LT1 (Std.) |
2.6 gms |
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| 13095-16 |
16 pr. |
8mm (.3135") |
Single Radius Chevy LS, LT1 (.050" more) |
2.6 gms |
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PRECISION CRAFTED 10° MACHINED VALVE LOCKS
- Highest quality steel alloy
- Heat treated and black oxide finished
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| Part No. |
Quantity |
Valve Stem |
Groove Type |
Angle |
Wgt./Pr. |
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| 13153-16 |
16 pr. |
8mm (.3135") |
Standard |
Single Radius Chevy LS |
6.6 gms |
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WEAR CAPS
Manley wear caps are ideal for applications where valve tip protection is required, but the valve itself does not have a hardened tip surface. Wear caps are typically used with titanium valve applications. They are manufactured from 4140 alloy steel bar stock to very tight tolerances so that the fitment to the valve is accurate and precise. A special heat treatment is performed to achieve and insure the proper, elevated hardness required to prevent erosion. |
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| Part No. |
Quantity |
Description |
Minimum Tip |
Type |
Thickness |
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| 42125-8 |
8 pcs. |
.3130" stem valves (8 mm) |
.130" |
Standard |
.080" |
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